CONFIRMEDDate confidence: CONFIRMEDStated as firmHow firmly the source words the date: confirmed, scheduled, estimated, delayed or unverified.Show all CONFIRMED pins88% CONFIDENCEOverall confidence: 88%How well the pin's source and references back up its dates.Weighted average of how firmly 4 references, the source included, support the pin's start and end times; a reference counts half as much for every 180 days older than the newestShow all pins at 75% confidence or better
Dated from the release notes leave the GPT-5 entry undated; OpenAI[1][3][4] launched GPT-5 in ChatGPT on Aug 7, 2025OpenAI's GPT-5 becomes ChatGPT's new flagship and default model, rolling out to Free, Plus, Pro and Team users.
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